Liner hanger



July 15,'1941'.. H. J. QUINTRELL `LINR HANGER Filed Oct. 14. 1938 l nu if@ [NI/ENTR TOR/VE I July 15, 1941.

H. J.' QUINTRELL LINER HANGER Filed oct. 14, 193s 2 shams-sheety 2 a. 4 4 F 2 Z Z 2 2 3 1 7 A NVENTOR' BY /74/661/ J a//z/r/efa y TTORNEY Patented July 15, 1941v UNITED STATES .PATENT OFFICE Application October 14, 1938, Serial No. 234,942

Claims.

My invention relates to liner hangers, and

among the objects of my invention are:

First,to provide aliner hanger which is particularly designed for use under conditions in which the producing zone is washed before setting the liner hanger, so that return circulation may be had between the liner and the casing in iwhich it is to be set;

Second, to provide a liner hanger of this charl on a tubing string T with one or .more stands of perforated liner L, depending therefrom.

Usually the liner hanger is positioned near the lower nd of the well casing C, which has been 5 previ usly cemented in place so that the liner extends into the open hole below thecasing drilled into the producing zone indicated by P.

Before setting the liner hanger,;it is often desirable to wash the formation confronting the acter which may be readily set at will, even liner of accumulations or deposits of drilling mud though the liner suspended therefrom becomes sanded in and cannot move;

Third, to provide a liner hanger which remains set even though the liner should subsequently cease to be 'sandedv in due to gradual washing away of the sand in the course of production: f

Fourth, to provide a liner hanger which, insofar as the driller is concerned, operates identical to. aconventional liner hanger and requires no i special tools or other equipment; and

Fifth, -to provide a liner hanger incorporating a slip joint between the hanger and theliner supported thereby which is particularly economi- I tion of the well casing and the liner indicated 'fragment rily; I Figure 32E an enlarged fragmentary, longitudinal sectio al view of my liner hanger taken through 2.-\2 of Figure 1;

Figure 3 is a sectional view similar to Figure'2, but showing only one wall of the liner hanger, this view indicating the position of the parts assumed when Vthe linei` hanger is `seated under normal conditions, that is, when the liner is free to move downwardly; A Figure 4 is a view similar to Figure 3, showthe position of the parts of the liner hanger 45 and collar I, but once moving upwardly cannot when the liner is sanded in and cannot dropD downward; i

-Figures 5 and 6 are transverse sectional views through 5 5 and 666, respectively, of Figure 2; Figure 7 is an enlarged fragmentary sectional View showing a modied form of slip joint;

Figure 8 is another fragmentary sectional view showing a further modied form of slip joint.

My liner hanger, -indicated generally byA, is adapted to be -lowered in a conventional manner and the like. Circulation is usually established down the tubing T and upwardly 'along the outside of the liner, around the liner hanger and upwardly through the lcasing Ato the surface.

During the course of this washing or circulat ing operation it often happens that the lower end of thevliner becomes sanded in so that the liner cannot be moved downwardly as required in or.- der to set the conventional linerhanger, it being 26 noter that the washing operation must takgplace before the liner hanger isset in order to have av return circulation. By providing a slip joint between the liner and the liner. hanger I am able to set my special linerhanger even\though the liner is sanded in.

With reference more particularly to Figure 2, my liner hanger comprises an upper collar I which is screwthreaded to the threaded upper end of a nipple 2, the lower end of which is screw--` 30 threaded to a sleeve 3. Fitted within the collar,

nipple and sleeve is a tubular mandrel or body 4. The upper end of the body 4 receives a threaded ring 5. The inside of the nipple 2 is of slightly smaller diameter than the collar- I so that the ring 5 may seatn ona shoulder 6 formed by the upper end of the nipple 2.

Between the lower end of the nipple 2 and sleeve 3 there is formedan annular channel 1 in which fits a latch ring 8. JThis ring is-splitv or segmentaland is adapted to flt into any one of a series of annular notches 9 formed varound the mandrel 4. The latch ring 8 and notches 9 areso 'arranged that the mandrel may slide upwardly with respect tofthe sleeve'3, nipple 2 again drop down.y In order to prevent accidental upward movement of the mandrel a shear pin I0 extends through the nipple 2 intothe mandrel 4. 'I'he mandrel 4 is'attached at its lower end Adirectly tothe liner. and surrounding the mandrel below the sleeve 3 are a series of packing rings II and spacer rings I2 arranged alternately. Below these rings there is provided a cone sleeve frictionally the walls of the casing C. The cage I6 is provided with a latch member I1" which engages a pin I8 provided on the mandrel 4 ior the purpose of holding the slipsin their retractedv position, as shown in Figure 1, during descent of the liner hanger. The packing rings, spacer rings, cone sleeve, slips and cage are all conventional in construction. i

1n order to prevent rotation of the mandrel 4 is applied to the tubing so as to move the mandrel V,

downwardly, and doing so the collar I, nipple 2 and sleeve 3 are'forced downwardly on the packing rings I I, while the cone I3 is held by the slips I4, with the result that the parts of the liner hanger assume the position shown in Figure 3. Insuch normal operation the shear pin I -remains intact.

If, however, the liner is sanded in and cannot move downward, the shear pin I0 is severed and the 4collar I, nipple 2 and sleeve 3 slip downwardly over the mandrel, causing the latch ring B to assume a new .position with respect to the notches 9, as shown in r.Figure 4. If precaution is taken to rst release thelatch I1 from the pin I8 there is no need to either rotate the mandrel or liner, or to move them longitudinally, in order to set the liner hanger.

In Figure 7 there is illustrated a modiiled form limited thereto.- but desire to include in the sope of my invention theconstructions, combin-ations and arrangements substantially as embraced in the appended claims.

I claim:

1. A liner hanger comprising: an anchor structure including a connecting means for initially suspending the liner hanger from a, tubing string, and a slip and cone means for securing the liner `hanger to a surrounding casing, said slip and cone means adapted to set by a predetermined down- Ward movement of said connecting means; a mandrel suspended from said connecting means and adapted -to support a liner; and a unidirectional, slip joint between said mandrel and connecting means to restrain said mandrel against downward movement relative lto said anchor means, but permit downward setting movement of said anchor means relative to said mandrel.

2. A liner hanger comprising: a mandrel; a coupling for initially connecting said mandrel to a tubing string; a unidirectional slip joint interposed between said mandrel and coupling; and a cone slip and-cage assembly tting said mandel and operable to secure the liner hanger in a surrounding casing.

of slip connection between the mandrel l and sleeve 3. In this construction the sleeve 3 is provided With a conical recess 2l id place of lthe channel 1, and a series of balls 22 are placed therein to form an over-riding clutch connection between the sleeve 3 and the mandrel 4. In thisV construction the notches Sgmay be omitted. In

Figure 8 a similar construction of the sleeve 3 Y is shown, but instead of the balls 22 a split or segmental ring 23 is provided, on the inner surface of which is formed a-series of teeth 24 capable of gripping the mandrel 4.` Similarly. this construction does not require teeth, or the like, on the mandrel 4. Both arrangements.

shown in Figures 7 and 8, operate in the same manner as 'the previously described construction, to permit upward movemeritof the mandrel, but

to lock the-samein its proper position with re- 'SDect to the sleeve 3l 3. A liner hanger comprising: a mandrel; a coupling for initially connecting said mandrel to a tubing string; a unidirectional slip joint interposed betweensaid mandrel and coupling; a cone slip and cage assembly fitting said mandrel and operable to secure the liner hanger in a surrounding casing; and means interlocking said mandrel and coupling against relative rotation.

4. A liner hanger comprising: a mandrel; a coupling for initially connecting said mandrel to a tubing string; a unidirectional 'slip joint interposed between said mandrel and coupling; .a cone slip and cage assembly fitting said mandrel and operable to secure theliner hanger in a surrounding easing; and fraiigible means restraining longitudinal movement of .the elements of said slip Joint. A

5. A liner hanger comprising: a mandrel; a coupling for initially connecting said mandrel to a tubing string; a unidirectional slip joint interposed between said mandrel and coupling a cone slip and cage assemblyntting said mandrel and operable to secure the liner hanger in a surrounding casing; means interlocking said mandrel -and coupling against relative rotation; and frang- 

